MetaData (size of datatype)

From: Shra <shravan(at)yaskatech(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: MetaData (size of datatype)
Date: 2002-04-29 06:20:25
Message-ID: f02042912184301E8@yaskatech.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-bugs pgsql-committers pgsql-hackers

Hi tom,

how to decode the atttypmod field........when i allocate 10 it shows it as 14
n for 20 it shows it as 24.......my problem is not just with
varchar........it is for all fields that has variable length .........the
same atttypmod returns -1 for integer? am confused........

I want the size allocated for each field i a table whether its a var-length
or fixed length........

Shra

On Saturday 27 April 2002 20:37, you wrote:
> Shra <shravan(at)yaskatech(dot)com> writes:
> > [ where to get declared-length info for var-length columns ]
>
> This is encoded in the atttypmod field (see PQfmod). I'd recommend
> using format_type() to decode the info, but if you don't mind possibly
> having to change your code from time to time, you could just wire
> knowledge of the interpretation of typmod into your code.
>
> In future, kindly be more selective about the lists you cross-post to.
> I generally make a practice of ignoring questions posted to the bugs
> list, for example.
>
> regards, tom lane

--
Shra

In response to

Responses

Browse pgsql-bugs by date

  From Date Subject
Next Message Ram 2002-04-29 06:31:56 Problem
Previous Message Tom Lane 2002-04-27 15:07:28 Re: [BUGS]

Browse pgsql-committers by date

  From Date Subject
Next Message Shra 2002-04-29 11:16:34 Re: MetaData (size of datatype)
Previous Message Tom Lane 2002-04-29 04:10:02 pgsql/src/bin/pg_dump pg_dump.c

Browse pgsql-hackers by date

  From Date Subject
Next Message Francois Suter 2002-04-29 08:46:49 Re: pid gets overwritten in OSX
Previous Message Tom Lane 2002-04-29 03:57:28 Re: pg_dump broken in cvs tip